[llvm] [SelectionDAG] Split vector types for atomic load (PR #165818)

[via llvm-commits]

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@@ -2111,6 +2111,20 @@ def atomic_load_64 :
   let MemoryVT = i64;
 }
 
+def atomic_load_128_v2i64 :
+  PatFrag<(ops node:$ptr),
+          (atomic_load node:$ptr)> {
+  let IsAtomic = true;
+  let MemoryVT = v2i64;
+}
+
+def atomic_load_128_v4i32 :
+  PatFrag<(ops node:$ptr),
+          (atomic_load node:$ptr)> {
+  let IsAtomic = true;
+  let MemoryVT = v4i32;
+}
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jofrn wrote:

They can be. Having the split intrinsics (e.g. atomic_load_128_v2i64) here makes #165818 strictly target independent and #148899 strictly target dependent.

https://github.com/llvm/llvm-project/pull/165818